Shift bar for visible indexes



Oct. 9, .1928.

J. SCHADE SHIFT BAR FOR VISIBLE INDEXES Fi1ed Dec. 22, 1927 2 Sheets-Sheet 1 In 0677/07 J56 152% aa e 2 Shqets-Sheet J SCHADE SHIFT BAR FOR VISIBLE INDEJQBTQS" Filed Dec. 22, 1927 I E=E Oct. 9, 1928.

Patented Oct. 9, 1928.

UNITED, STATES PATENT OFFICE.

JOHN SCHADE, OF HOLYOKE, MASSACHUSETTS. ASSIGNOR TO NATIONAL 'iBLANK FOOK (10., OF HOLYOKE, MASSACHUSETTS, A. VOLUNTARY TRUST ASSOCIATION 01 CO- FARTNERSHIP HAVING AS TRUSTEES F. B. TOWNE, E. S. TOWNE, J. M. TOWNE, AND

F. W. WILSON.

SHIFT BAR FOR Application filed December This invention relates tovisible indexes in which a plurality of sheets or slips are confined on metal posts and arranged in overlapping relation.

But the present invention consists in the provision of a separate transfer bar by which the sheets may be parted and certain sheets clamped and removed from the index to per mit of insertions in the latter.

In my application, Serial No. 222,457, filed September 28, 1927, relating to visible indexes of this sort, the leaves or slips could be placed over posts that were carried by a bar that was capable of being shifted, and the particular object of the present invention is to eliminate the shifting feature as a constituent part of the visible index book, and to provide a separate device that is manually operated for the purpose of clamping and removing certain sheets whereby insertions could be made in places between slips where no proper spaces were provided.

In the accompanying drawings which form a part of this application Figure 1 is a perspective view of the transfer bar in opened condition.

Figure 2 is a similar view of said bar with the parts in closed position.

Figure 3 is a section at the line 33 of Figure 2.

Figure 4 is a broken elevation of a visible index page as it appears prior to the insertion of an additional slip.

Figure 5 is a. view similar to Figure 4 but showing my improved transfer bar inserted in open condition beneath the sheets that are to be clamped and removed.

Figure 6 is a view similar to Figure 5 but showing the transfer bar closed preparatory to the removal of the sheets.

Figure 7 shows the index sheet after certain sheets have been removed by the transfer bar.

Figure 8 is a view similar to Figure 7 but showing the additional sheet inserted over the posts, and

Figure 9 shows the page of sheets after the sheets previously transferred have beenrestored by the bar.

Similar numerals of reference denote like parts in the several figures of the drawing.

The transfer bar comprises a lower elonvIsI'BLn INDEXES.

22 1927. Serial No. 241,781.

gated plain strip-of metal 1 and an upper elongated plain strip of metal 2 these strips being hinged together at 3 so that the strip 2 can be folded over closely against the strip 1.

The strip 2 has extending therefrom at right angles and at spaced intervals spurs 4, while at, the lower end of the strip it is preferred to form a little thumb piece 5 for convenience in the operation of the strip 2.

In a visible indexbook there are a series of posts 6, and the sheets or slips along their inner margins have perforations 7, there being any desired number of these perforations in-each sheet, and such perforations are all spaced apart an' equal distance and are placed over these posts so as to confine the sheets.

It frequently happens that it is desirable to insert a sheet between two other sheets where there is no adequate space provided for such insertion, and therefore it becomes necessary to part the sheets at the place where the insertion is to be made and to shift all the sheets above the parting so that they will occupy one space higher on the page, and this has been accomplished as above stated by providing a visible index book with a shifting member to which the posts are secured, as in the instance of my application above referred to, and also separate manually operated devices have been utilized which clamp the outer edges of the sheets to be removed, and in devices of this sort the perforations at the edge of the sheets frequently become disarranged so they would not be in alinement which occasioned considerable trouble in properly alining them so that they could be placed upon the posts.

In the present invention the sheets are parted at the place where the insertion is. to

be made. and the lower strip 1 inserted be- A In the instance shown in the drawings, the I sheets are denoted by A, A, A A, A, A A &c., and it is desired to insert sheet A bethe sheets confined by the transfer bar are then restored by placing them on the posts one space higher, so that the index with the insertion made will be as is shown at Figure 9.

lftwill be noted that the posts-act as a guide for the strip 1 when it is inserted beneath the sheets, and that the perforations in the sheets will always be properly positioned so that the spurs 4 will enter them when the strip 2 is swung downwardly, and with these spurs within these perforations, it is impossible to' disarrange the sheets, and the perforations in the latter are always properly alined so that the sheets may readily be transferred to the page over the posts after the insertion has been made.

In instances where it is desired to arrange the whole series of sheets one or more. spaces higher up or lower down on a page, the strip 1 is inserted beneath all the sheets and against the posts and the strip 2 folded over so that the spurs engage with the proper perfora-. tions, and the mass of sheets is then shifted the desired number of spaces up or down and the perforations placed over the proper posts.

What is claimed is 2-- 1. A shift bar for use in connection with a visible index book comprising posts and pages consisting of sheets or slips having perforations and arranged in overlapping relation with said posts extending through certain of said perforations, said bar comprising a lower member adapted for insertion beneath the sheets to be shifted and an upper member adapted to be closed against the lower member whereby said sheets are embraced, said upper member carrying projections that enter the perforations in the sheets to be shifted when the members are in closed condition.

' 2. A shift bar for use in connection with a visible index book having posts and pages conslsting of sheets or slips having perforations and arranged in overlapplng relation with said posts extending through certain of edges, the lower strip adapted to be inserted beneath a selected number of sheets while the upper strip has projections extending at right angles thereto and adapted to enter said perforations in the sheets when the strip is closed.

In testimony whereof I affix my signature hereto.

' JOHN SOI-IADE. 

